idocrase

[ahy-duh-kreys, id-uh-]

noun

Mineralogy.

1. vesuvianite.

idocrase

/ ˈaɪdəˌkreɪs, ˈɪd- /

noun

1. another name for vesuvianite

Word History and Origins

Origin of idocrase¹

1795–1805; < French < Greek eîdo ( s ) form + krâsis mixture

Word History and Origins

Origin of idocrase¹

C19: from French, from Greek eidos form + krasis a mingling

Example Sentences

Idocrase, id′o-krāz, n. the mineral vesuvianite.

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Under andradite may also be placed topazolite, a honey-yellow garnet, rather like topaz, from Piedmont; colophonite, a brown resin-like garnet, with which certain kinds of idocrase have been confused; aplome, a green garnet from Saxony and Siberia; and jelletite, a green Swiss garnet named after the Rev. J.H.

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I think we may fairly assert that such minerals as tourmaline, jargoon, peridote, spinel and chrysoberyl, though their names may be familiar, are not stones which would be recognized by any but those who are in some sense experts; while other minerals, such as sphene, andalusite, axinite, idocrase and diopside, are possibly almost unknown to most people, even by reputation.

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The following minerals produce beads with a small quantity of soda, but if too much is added they produce slags: okenite, pectolite, red silicate of manganese, black hydro-silicate of manganese, idocrase, manganesian garnets, orthite, pyrorthite, sordawalite, sodalite, fluorspar.

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A banded and mottled calc-silicate hornfels occurring with the limestone at Iyerry Falls, W. N.W. of Braemar, has yielded malacolite, wollastonite, brown idocrase, garnet, sphene and hornblende.

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